Steam-valve



(No Model.)

W. R. CARROLL. STEAM VALVE.

No. 463,138, Patented N0v.1'7, 1891.

WITNESSES INVENTOR UNITED STATES PATENT OFFICE.

\VILLIAM R. CARROLL, OF PELIOAN, LOUISIANA.

STEAM-VALVE.

SPECIFICATION forming part of Letters Patent No. 463,138, dated November17, 1891.

Application filed June 9, 1891. I Serial No. 395,683. (No model.)

To all whom it may concern.-

Beit known that 1, WILLIAM R. CARROLL, a citizen of the United States,residing at Pelican, De Soto parish, State of Louisiana, have inventedcertain new and useful Improvements in Steam-Valves, of which thefollowing is a specification.

It is sometimes desirable in operating steamengincs-as, for instance, inoperating the engines used for driving cotton-gins-to enable theoperator at the gin to cut off the steam from the engine independentlyof the use of the ordinary throttle; and the object of my invention isto enable this to be done, and I effect this result by combining withthe steam.- pipe and in addition to the throttle-valve an independentvalve and easing, thelatter preferably in the form of an elbow, and byarranging connections cxtending from the said supplemental valve to thegin or other place where the operator is stationed, as fully set forthhereinafter, and as illustrated in the accompanying drawings, in whichFigure 1 is a plan view illustrating my improved valve and itsconnections; Fig. 2, an enlarged sectional. view of the valve andcasing; Fig. 3, a cross-section on the line 3 3, Fig. 2.

The valve-casing A is preferably made in the form of an elbow with twobranches 1 2 for connection with the horizontal and vertical connectionsof the steam-pipe, so that said casing will constitute a substitute forthe elbow which is almost invariably used at some point in the line ofthe pipe, and in said casin g is a partition 4, having an opening 5,witha surrounding face 6, adapted to fit the cylindrical body 7 of a valve13, which body .is hollow and provided with an opening or port 8,adapted to be brought to coincide with the port 5 of the partition 4:,but to be carried wholly from said. port when the valve is carriedquarter around in each port, the move ment of the valve being thenlimited by the contact of the valve-arm 9 with a stop 10 01:12.

The valve B is hollow and closed at the top and has at the bottom twoports 13 13 and an intermediate cross-piece 14, which, when the valve isturned to carry the port A away from the port 5, comes opposite to andcloses an elongated port 15 in a partition 16 of the casopened or closedat the same time.

In order to reduce the friction upon the valve, I cut away the casing,so that the valve will bear only upon the seat 6 around the port 5 andupon two seatsat the opposite ends, and I prefer to make these two seats17 18 tapering or oonical,-the former adapted to the flaring head 10 ofthe valve and thelatter to the beveled end 20 of the valve, so that thelatter may be ground to fit both seats closely, preventing the escape ofsteam, should any leak around the face 6, and also facilitating the insertion of the valve in the casing. The valve is held in place by meansof a spring 21, passing through the cap 22.

A spring or Weight is arranged to turn the valve in one direction. Forinstance, a cord 23, connected with the lever 9, passes over aguide-pulley 24 and has connected to it a weight 25, which tends to pullthe lever in the direction of arrow, Fig. 1, to bring it against a stop10, and thereby close the valve. A cord or other suitable connection 26extends from the lever 9 to the operators station at the gin or otherposition, so that at any time the operator by pulling upon said cord canturn the valve quarter around, closing the ports 5 and 15 and cuttingoff the steam, regardless of the position of the throttle-valve.

While I prefer to provide the valve with the cross-piece 14 for closingthe port 15 for additional security in case of leakage around the case5, the said cross-piece and port may, if desired, be dispensed with. I

It will be seen that the. valve above described may be readilyconstructed, that the only finishing required is at the points 19 2Oing, so that the ports 5, 8, and 15 will all be and around the port 8,that the casingA may Y be readily machined to form the seats in theirproper relation, and that said casing serves both as a valve-casing andas an elbow for L-union.

Vithout limiting myself to the precise construction and arrangement ofparts shown and described, I claim 7 1. The within-described valve,consisting of a casing having two branches at right angles to eachother, a partition 4, provided with a port, inclined valve-seats 17 and18, and a hollow cylinder closed at one end and opened at the other,resting on said seats, the cylinder being provided with a port at oneside corresponding with the port in the partition, substantially as setforth.

2. The within-described valve, consisting of an elbow-casing having twobranches, a partition in one of the branches providedwith a port 5, andthe cylinder V, closed in the Valvecasing and having a single side portcorresponding with the port 5, the cylinder being provided with across-piece 14 at its end corresponding with the ports 15 of the casing,substantially as set forth.

3. The within-described elbow-valve, consisting of a casing having apartition pro-- vided with'a single port, ports at the end of thecasing, a cylinder fitting the casing and provided with asingle valve inits side corresponding with a valve in the partition and with across-piece at its end corresponding to the valve in the case, a cap, aspring between the cap and cylinder, an arm connected to the cylinderand provided with means for turning it automatically in one direction,and a connection leading to a distant point for turning the valve in theother direction from name to this specification in the presence of twosubscribing witnesses.

WILLIAM R. CARROLL. Witnesses;

O. F. HODLY, I. ZEIGLER'.

